Volvo 850 2.0 10V purchase advice

Hello, my buddy needs a car in the near future which has a lot of space, an AHK and not much consumption. Have looked around us a bit in the net and think that it will be a Volvo 850, have already found something quite interesting. A Volvo 850 2.0 10V with 126 hp, the car has run about 450T and an LPG gas system, but currently no more tuv. He should cost 300, – what we find more than fair. According to the owner the engine runs well and also at other things he should be well The gas system doesn’t run at the moment, however, why doesn’t the owner know, that should also be the reason why he didn’t get through the Tüv. Now my question I think this in itself is quite good, because if you get the gas system to run and the car runs and gets 2 years tüv it will be cool. The question is on what should you pay attention to with the cars, or do you think it makes sense to buy it or rather not? Optical condition is totally irrelevant, only has to have space and little use. Uchen. mfg